Prettier had some missing extensions in the config, this commit
added them, we then prettified the whole project. We
ignore the `cunningham-tokens` files.
This allow to use the default tokens from Typescript or Javascript file
of dependents repos. For instance this wîll be used by packages/react
to aggregate components tokens files.
This repo is made for the bin script that generates the tokens files,
at the moment it only generates a css file, but it is designed to be
able to generate any other file format ( Typescript, Javascript for example )